S Michael Huff said he’s excited to play for a defensive-minded coach in Dennis Allen and to play “a real defense” that will be less predictable than in the past when the Raiders relied heavily on man-to-man coverage and rarely blitzed. “Before with Al (Davis), rest in peace, he had his hands in all the defense,” Huff said. “He had all his little things he liked to do. Now with D.A. out there, we got all kinds of blitzes, we got 3-4, 4-3 fronts, just a lot of different variety and a lot of different things going on.”